data.ub.uio.no is a platform for controlled subject vocabularies as linked open data.
To support search and navigation, we have installed the Skosmos ontology browser from the National Library of Finland. Skosmos on GitHub.
If you want to reuse data, here's data dumps, a SPARQL endpoint and a REST-API (documentation).
data.ub.uio.no layout designed by Hahmo Design
Skosmos version 2.17-dev